The GRex was one of the first busboards to provide the A1200 with fully
active PCI slots. In the latest version all slots support 32bit DMA and
are capable of transferring at up to 25MB/sec with 1.76GB of non
bank-switching address space. Earlier models may only support DMA in
the top 1 or 2 slots. The board has both AT and ATX power supply
connectors. In order to use this card, it requires a Blizzard PPC
accelerator as it takes advantage of its local expansion bus. The GRex
is designed to be installed in one of the following towers:

V-Tower

EZTower

Winner Tower

Power Tower

Elbox Tower

Infinitiv Tower

At the time of writing, drivers exist for the following cards/chipsets.